CN118508123A

CN118508123A - Contact pin, plug connector and method for manufacturing contact pin and plug connector

Info

Publication number: CN118508123A
Application number: CN202410177384.8A
Authority: CN
Inventors: G·潘尼茨; H·保卢斯; M·雷伯; C·比切尔斯; M·莱因哈特; C·鲁施; B·伯格纳; U·卢茨
Original assignee: TE Connectivity Solutions GmbH
Current assignee: TE Connectivity Solutions GmbH
Priority date: 2023-02-15
Filing date: 2024-02-08
Publication date: 2024-08-16
Also published as: DE102023103726A1; KR20240127301A; US20240275111A1

Abstract

The invention relates to a contact pin for a plug connector, comprising a contact wire and an impedance adapting element from the remainder of a bullet strip, wherein the impedance adapting element is arranged between the two ends of the contact wire. Furthermore, the invention relates to a plug connector having a contact pin according to the invention and a shield receiving the contact pin as an inner conductor, wherein the shield has a cross-sectional jump between the two ends of the contact pin along the longitudinal direction of the shield, wherein the impedance adapting element of the contact pin is arranged at the level of the cross-sectional jump of the shield in the longitudinal direction of the contact wire. The invention further relates to a method for producing such a contact pin or plug connector.

Description

Contact pin, plug connector and method for manufacturing contact pin and plug connector

Technical Field

The present invention relates to a contact pin for a plug connector. The invention also relates to a plug connector having such contact pins and to a method for producing a contact pin and/or a plug connector. The invention also relates to a contact pin set and a plug connector set.

Background

The coaxial cable is a 2-pole cable having a concentric structure. They consist of an inner conductor surrounded by a hollow cylindrical outer conductor, also called a shield, at a constant distance. The outer conductor shields the inner conductor from interfering radiation. Coaxial cables are commonly used for signal transmission in the high frequency range. For example, the sound signal and/or the image signal may be transmitted via a coaxial cable. Coaxial cables have a wave impedance of typically 75 ohms (e.g., for video transmission) or 50 ohms, depending on the application. The decisive factor for the wave impedance (also called impedance) is the distance between the inner conductor and the outer conductor and the material in the gap. Thus, a change in the distance of the inner conductor to the outer conductor results in a change in impedance. In order to ensure as lossless a signal transmission as possible, the wave impedance should be kept constant over the entire transmission path. Coaxial cables typically have a plug connector at their ends, via which the coaxial cable may be connected to other electrical components for further signal processing. Such plug connectors typically include contact pins that functionally correspond to the inner conductors of the coaxial cable and a shield that receives the contact pins. One end of the contact pin is designed to be connectable to a coaxial cable. The other end of the contact pin is designed to be connectable to another electrical component, such as a socket on a circuit board. The transition point between coaxial cables of another electrical component is also referred to as the interface of the coaxial cable. Typically, signal losses occur at such interfaces because the distance between the inner conductor and the outer conductor or the dielectric medium located between them varies due to the installation space.

In mass production of plug connectors, contact pins are made of contact wires. Typically, the contact wires are held in the bullet strip to simplify their handling. In the simplest sense, a bullet strip or bandoleer is an elongated band with sleeves arranged adjacent to each other in the longitudinal direction of the band. The surface of the bullet strip is typically designed to be electrically conductive. The individual contact pins and wires may each be received in adjacent sleeves of the bullet strip. Thus, both ends of the contact wires may protrude beyond the bullet strip. To manufacture the plug connector, the contact pins or wires are removed from the bullet strip.

Disclosure of Invention

The invention is therefore based on the task of providing a contact pin which is easy to manufacture, easy to handle and reduces signal losses.

This object is achieved by a contact pin for a plug connector, comprising a contact wire and an impedance adapting element from the remainder of the bullet strip, wherein the impedance adapting element is arranged between two ends of the contact wire.

Advantageously, the surplus elements on the contact wire increase the conductive surface of the contact pin and at the same time increase the expansion of the contact pin at the level of the surplus elements transversely to the longitudinal direction of the contact wire. In the following explanation, the remaining part of the term (bullet strip) is synonymously used for the impedance adapting element.

Alternatively or cumulatively, the remainder of the bullet strip comprises a holding section holding the contact wire and a molding section connected to the holding section by a material bridge and for adapting the impedance. The two ends of the contact wires preferably protrude beyond the remainder, since the contact wires penetrate the holding section.

Alternatively or cumulatively, the material of the remainder is composed of a conductive material or a platable material. Preferably, it consists of copper with a lower purity content than the contact wires.

Alternatively or cumulatively, the contact wires have a circular or rectangular cross-section. In particular, the contact wires can be designed straight.

According to another advantageous embodiment, the molding section comprises the remaining part of the notched band section of the bullet band. Advantageously, such a molded section simplifies the production of the contact pin, since it saves resources and at the same time reduces signal losses. Thus, the molding section corresponds to a belt section of the bullet band strip extending in the longitudinal direction of the bullet band strip. The molded sections of the remainder are disposed adjacent to the other molded sections of the bullet band prior to severing. In particular, the molding sections are arranged adjacent to the other molding sections in the longitudinal direction of the bandoleer.

Alternatively or cumulatively, the retaining section of the remainder is sleeve-shaped. Preferably, the contact wires penetrate the sleeve-shaped holding section at both ends of the remainder.

Alternatively or cumulatively, the mould section comprises plane parallel plates. The molded sections thus extend transversely to the longitudinal direction of the contact wires. Advantageously, the extent of the contact pin transversely to the longitudinal direction of the contact wire is thereby increased.

Alternatively or cumulatively, the molded section has a curved shape in a cross-sectional plane perpendicular to the longitudinal direction of the contact wire. Preferably, the curved shape of the molded section extends around the contact wire segment. According to a further advantageous embodiment, the molding section can be embodied in a curved shape. For example, the curve shape corresponds to a circular curve, a parabolic curve, an elliptic curve, or a hyperbolic curve.

Alternatively or cumulatively, the molded section partially or completely encloses the contact wire.

According to a further advantageous embodiment, the center point of the contact wire in a cross-sectional plane perpendicular to the longitudinal direction of the contact wire is offset from the center point defining the curved shape of the molded section.

According to a further advantageous embodiment, the contact wire has a fastening section which is flush with the impedance matching element in the longitudinal direction of the contact wire and at a distance therefrom.

Alternatively or cumulatively, the fastening section is pressed with indentations and/or protrusions.

According to another advantageous embodiment, the contact wire has a gradual portion towards one end. Due to the taper, the cross-section of the contact wire expands to an end of the contact wire decreases. In other words, the diameter of the contact wire on one side of the transition is smaller than the diameter on the other side of the transition.

The object of the invention is furthermore achieved by a plug connector having a contact pin according to the invention, wherein the plug connector comprises, in addition to the contact pin, a shield which receives the contact pin as an inner conductor, wherein the shield has a cross-sectional jump between the two ends of the contact pin in the longitudinal direction of the shield, and wherein the impedance adapting element of the contact pin is arranged at the level of the cross-sectional jump of the shield in the longitudinal direction of the contact wire.

The longitudinal direction of the contact wires may be substantially the same to correspond to the longitudinal direction of the shield accordingly.

Preferably, the shield may be used as an outer conductor of the coaxial line, wherein the contact pin corresponds to an inner conductor of the coaxial line. Accordingly, the contact pins may be correspondingly coaxially arranged in the center of the shield.

According to a further advantageous embodiment, a holding element may be located between the contact pin and the shield, which holding element is flush with the impedance adapting element in the longitudinal direction of the contact wire and at a distance therefrom. Preferably, the holding element may accommodate a fastening section of the contact pin. Advantageously, the holding element fixes the position of the contact pin with respect to the shield holding the contact pin in the longitudinal direction of the contact wire.

According to another advantageous embodiment, the plug connector may be connected to a high-frequency coaxial cable, or a corresponding conductor.

According to a further advantageous embodiment, a seal is provided between the holding element and the impedance adapting element. The seal may be an integral part of the retaining element. Alternatively or cumulatively, the seal may be a sealing ring.

According to a further advantageous embodiment, the shield has a section having a larger cross section in the longitudinal direction after the cross-section jump than before the cross-section jump, wherein the section of the shield having the larger cross section partially or completely encloses at least the molded section of the contact pin.

Alternatively or cumulatively, the impedance adapting element is adapted to a wave impedance of 50 ohms or 75 ohms of the plug connector.

Furthermore, the object of the invention is achieved by a method for producing a contact pin according to the invention. The method of manufacturing the contact pin comprises providing a surplus piece of the bullet strip fitted with contact wires, wherein the contact wires are fastened in a holding section of the surplus piece of the bullet strip, and wherein the surplus piece comprises a molded section connected to the holding section by a material bridge, and cutting and/or reshaping the molded section in accordance with calculated values for adapting the impedance. The holding section is preferably sleeve-shaped. The calculated value may be determined by a simulation that depends on the shield housing the contact pin and having a cross-sectional jump. By adapting the molded section according to the calculated values, impedance variations caused by cross-sectional jumps of the shield can be compensated.

The object of the invention is furthermore achieved by a method for producing a plug connector according to the invention.

The manufacturing method of the plug connector according to the present invention includes: providing a bullet strip fitted with contact wires, wherein one contact wire is arranged in each of the respective holding sections of the bullet strip; cutting the bullet strip at a cutting line to obtain a remainder of the bullet strip fitted with contact wires, wherein the cutting line on the bullet strip extends between two contact wires arranged adjacently in a longitudinal direction of the bullet strip; and inserting a remainder of the bullet strip fitted with the contact wire into a shield having a cross-sectional jump, wherein the remainder is arranged at the level of the cross-sectional jump of the shield in the longitudinal direction of the contact wire.

Preferably there is exactly one contact wire in the remainder of the bullet strip.

Advantageously, the remainder of the bullet strip, which has been cut off and fitted with contact wires, may already form a contact pin according to the invention.

Alternatively or cumulatively, the shield housing the contact pins may be cylindrical. In particular, the shield can connect two hollow-cylindrical formed sections via a cross-sectional jump.

According to a further advantageous embodiment, the residual piece additionally comprises a molded section for adapting the impedance, whereby the method of manufacturing the plug connector further comprises reshaping the molded section of the residual piece according to a value corresponding to the cross-sectional jump of the shielding piece.

According to a further advantageous embodiment, the molded section of the remaining part has symmetry with respect to the longitudinal direction of the contact wires. For example, the molded section may be rotationally symmetrical with respect to the longitudinal direction of the contact wire. As described above, the molding section may be connected to the holding section of the remainder via a material bridge.

According to a further advantageous embodiment, the remaining part fitted with the contact wires can be used as a guiding aid when it is inserted into the shielding.

Preferably, the contact wires may penetrate corresponding holding sections in the bullet strip. As already explained, both ends of the contact wire may protrude beyond the holding section. Preferably, the holding section is embodied in the shape of a sleeve.

According to a further advantageous embodiment, the contact pin produced by the above-described method for producing a contact pin according to the invention can be used in the method for producing a plug connector according to the invention instead of the remainder of the bullet strip fitted with contact wires. According to this embodiment, the contact pin manufactured according to the invention is inserted into a shield having a cross-sectional jump. Preferably, after insertion, the molded section of the contact pin is arranged at the level of the cross-sectional jump of the shield.

The object of the invention is furthermore achieved by a contact pin set according to the invention, wherein at least one impedance adapting element of a contact pin is geometrically shaped differently from an impedance adapting element of another contact pin of the contact pin set.

The object of the invention is furthermore achieved by a plug connector assembly according to the invention, wherein the first contact pin of the plug connector assembly has an impedance adapting element, the geometry of which differs from the second contact pin of the plug connector assembly.

The above-described features can be used for the method or manufacturing method according to the invention and the contact pin or plug connector (hereinafter also referred to as device) according to the invention, even if not explicitly stated. Thus, process features that are explicitly described only in the context of the method may also represent device features. Conversely, product features that are only explicitly described in the context of a product can also represent method features. Thus, a product, arrangement or unit may correspond to a method step or a function of a method step. Similarly, aspects described in the context of method steps also represent descriptions of their corresponding units, arrangements, products or properties. The advantages described in relation to the product also apply to the method according to the invention and vice versa.

The term "and/or" includes all combinations of one or more of the associated elements listed and may be abbreviated as "/".

In the embodiments of the invention described above, the remainder of the bullet strip for impedance adaptation may be conductively connected to the contact wires. Preferably, the contact wire is electrically conductively connected to the remainder over the entire length of the remainder in the longitudinal direction of the contact wire.

Drawings

Hereinafter, the invention is described in more detail by way of example with reference to the accompanying drawings by means of advantageous embodiments. The advantageous developments and embodiments shown here are independent of one another and can be combined with one another in any desired manner according to the use case. For simplicity, elements and functions present in several embodiments are explained only once, if necessary.

In the drawings:

fig. 1 shows a perspective view of a contact pin according to the invention;

fig. 2 shows a modification of the contact pin of fig. 1;

fig. 3A, 3B show perspective views of contact wires having a circular or rectangular cross section;

fig. 4 shows a bullet strip fitted with contact wires;

Fig. 5 shows a side view of a contact pin according to the invention;

Fig. 6 shows a flow chart of a method of manufacturing a contact pin;

fig. 7 shows a flow chart of a method of manufacturing a plug connector;

fig. 8 shows a top view of a bullet strip fitted with contact pins;

fig. 9 shows a cross-sectional view of the plug connector;

Fig. 10 shows a contact pin set; and

Fig. 11 shows a plug connector set.

Detailed Description

Fig. 1 shows an exemplary embodiment of a contact pin 2 according to the invention. The contact pin 2 includes a contact wire 4 and a remainder 6 of the bullet strip (bandoleer strip). Contact wires are electrical conductors, typically made of metal. For making electrical contact with two other conductive members, each of which can be brought into contact with two terminals 8 and 10 of the contact wire 4. The lateral extent of the contact wires 4 is preferably constant between the two end points 8 and 10. The contact pin 2 also serves as an inner conductor of the coaxial line. In this use case, the contact pin is surrounded by a shield or the outer conductor of the coaxial line. The coaxial line typically has an impedance of 50 ohms, and in the high frequency range, an impedance of 75 ohms. In order to ensure that the signal transmission is as lossless as possible, it is desirable that the impedance behaviour of the coaxial line remains constant over the whole length of the line. Small deviations in the cross section of the coaxial line can already change the impedance behaviour. Signal losses can occur if there are no components to compensate for these cross-sectional deviations.

The remainder 6 of the bullet strip comprises two parts. On the one hand, the residual part 6 has a holding section 12, which holding section 12 is designed to hold the contact wires in a friction-fitting manner. Preferably, the holding section 12 is embodied in the shape of a sleeve. Furthermore, the holding section 12 is connected to the molding section 14 of the residual piece 6 via a material bridge. Preferably, the molded section 14 is in partial contact with the contact wires in the longitudinal direction R1. In the embodiment of the contact pin 2 shown in fig. 1, the molded section 14 extends transversely to the longitudinal direction R1 of the contact wire.

Since the bullet strip is made of a galvanizable or electrically conductive material, the remainder 6 of the bullet strip is electrically conductively connected to the contact wires 4 at the holding section 12 and/or the molding section 14. Furthermore, since the remainder 6 is located outside the contact wires 4, the conductive cross section of the contact pin 2 increases at the height at which the remainder 6, in particular the molded section 14, contacts. The remainder 6 of the bullet strip thus acts as an impedance adapting element for the contact pin 2.

The use as an impedance adapting element is particularly advantageous for coaxial lines.

For coaxial cables and corresponding plug connectors for coaxial cables, the impedance of the coaxial cable is produced by the ratio of the diameter of the inner conductor to the diameter of the outer conductor and by the electrical constant of the material between the inner conductor and the outer conductor.

Since the effective diameter of the contact pin 2 in the longitudinal direction of the contact wire is larger than the diameter of the contact wire 4 at the level of the molded section 14, the coaxial plug connector obtains a different impedance if the contact pin 2 of the invention is surrounded by the outer conductor or the shielding of the coaxial plug connector.

The contribution of the impedance adaptation achieved by the contact pin of the invention can be further adapted by reshaping the molded section 14 according to the situation of use.

Depending on the use case, computer simulation of the finite element method can be used to calculate the geometry, size and shape of the molded sections.

Based on the calculated variables, such as shape, expansion or curvature of the molded section 14, the impedance behaviour of the contact pin 2 can be adapted to the external environment, i.e. the shield used for the contact pin 2. In the simplest case, the lateral expansion of the molded section 14 is adapted to accommodate the shielding of the contact pin 2, based on the calculated shape. Here, the lateral expansion of the molded section 14 refers to an expansion of the molded section 14 transverse to the longitudinal direction of the contact wires. Alternatively or cumulatively, the molded section 14 may be bent or deformed differently and thus interact with the outer shield of the contact pin 2 for impedance adaptation.

An alternative embodiment of the contact pin 2 of the present invention is shown in fig. 2. The molding section 14 of the residual piece 6 or the impedance adapting element 6 shown in fig. 2 differs from the molding section 14 shown in fig. 1 in that the molding section 14 is bent around the contact wire 4. Preferably, the molded section 14 is fully against the contact wire 4. In the cross-sectional plane with respect to the longitudinal direction R1 of the contact wire, the inner contour of the molded section 14 corresponds to the outer contour of the contact wire 4 in the cross-sectional plane with respect to the longitudinal direction R1 of the contact wire. In fig. 1 and 2, the contact wires 414 are each implemented as round wires. This results in a circular shape of the contour of the molded section 14 shown in fig. 2. Alternatively, the contour of the contact wire 4 may also be square or rectangular. For example, the contour of the molded section 14 for the contact wire 4, which is based on a square base, also has a square contour.

Fig. 3A and 3B each show a perspective view of the contact wire 4. The contact wire 4 in fig. 3A has a circular contour with a diameter 16 in a cross section with respect to the longitudinal direction R1 of the contact wire. On the other hand, the contact wire 4 in fig. 3B has a square profile in a cross section with respect to the longitudinal direction R1 of the contact wire. In this case, the effective diameter 18 of the contact wire 4 may be determined as the diagonal between two opposite corner points of the wire.

Fig. 4 shows a bullet strip fitted with contact wires 4. A plurality of contact wires 4 are held at respective holding sections 12 in the bullet strip 20. The bullet strip 20 extends in a longitudinal direction R2 of the bullet strip, wherein the contact wires 4 are arranged adjacent to each other in this direction R2. The longitudinal direction R2 of the bullet strip is substantially perpendicular to the longitudinal direction R1 of the contact wire.

The respective holding section 12 of the bullet strip 20 holding the contact wire 4 is preferably sleeve-shaped. The holding section 12 thus has two openings arranged opposite one another in the longitudinal direction R1 of the contact wires, through which the contact wires 4 can pass.

In the manufacturing method of the contact pin 2 of the present invention, the bullet strip is cut at the cutting line 22. The severing may be performed, for example, by cutting or punching. By cutting the bullet strip 20, a surplus piece 6 of the bullet strip 20 fitted with the contact wires 4 is obtained, which surplus piece 6 has a mould section 14 as shown in fig. 1, which mould section 14 essentially corresponds to a plane parallel plate. The distance of the cut-off wire 22 to the contact wire 4 may correspond to a calculated value for a coaxial shield adapted to accommodate the contact pin 2. In other words, the distance is calculated or determined in such a way that the impedance changes occurring in the interaction with the shield accommodating the contact pin 2 are compensated for by the molded section 14 being dimensioned in this way.

Fig. 5 shows a side view of a contact pin 2 with further optional features. The contact pin 2 shown extends in the longitudinal direction R1 of the contact wire from a first end 8 to a second end 10. Furthermore, the remainder 6 of the bullet strip for impedance adjustment is arranged between the two ends 8 and 10 in the longitudinal direction R1 of the contact wire. Furthermore, the contact pin 2 may have a fastening section 24 between the remainder 6 and the one end 10. In other words, the fastening section 24 is arranged flush with the remainder 6 in the longitudinal direction R1 of the contact wire. The fastening section 24 is preferably provided with indentations 26 and/or protrusions 28. The fastening section 24 serves to fasten the contact pin 2 in a shield or outer conductor accommodating the contact pin 2. Furthermore, the contact pin 2 or the contact wire 4 may have a taper 30 between the second end 10 and the remainder 6 in the longitudinal direction R1 of the contact wire. The gradation portion 30 changes the cross section of the contact wire 4. In the example shown, the cross section of the contact wire 4 decreases towards the second end 10.

For example, the contact wires 4 may be provided with a taper 30 in order to make it easier to insert the contact pins 2 into another component (not shown here), for example a socket, which receives the contact pins 2 at the second end 10.

Fig. 6 shows a flowchart 600 of a method of manufacturing a contact pin of the present invention.

In step 610, the remainder of the bullet strip is provided fitted with contact wires. The remainder has a retaining section and a molding section. Preferably, the holding section is sleeve-shaped. The holding section of the remaining part may have an electrically conductive connection to the contact line. Furthermore, the molding section may be connected to the holding section via a material bridge. Furthermore, the molded section can be in electrically conductive contact with the contact wire over its entire length in the longitudinal direction of the contact wire.

In step 620, the molded sections of the remainder of the bullet strip may be cut according to the calculated values for impedance adaptation. For example, the cutting may be achieved by a mechanical or thermal cutting process. For example, it may be done by stamping, laser cutting or water jet cutting.

Alternatively or cumulatively, the molded section may be reshaped in step 630 depending on the calculated values for the impedance adaptation. If the method 600 includes step 620, the reshaping in step 630 occurs after the molded sections have been cut in step 620. Reshaping may include manufacturing techniques such as rolling, die-sinking forging, swaging, extrusion, and/or bending of the molded sections.

The calculated value may be determined by a simulation method from the geometry and physical expansion of the shield housing the contact pins. Advantageously, the molded sections may be formed with reduced signal loss. Preferably, the signal loss is reduced in combination with a shield for the coaxial cable.

Fig. 7 shows a flow chart 700 of a method of manufacturing a plug connector of the present invention.

In step 710, a bullet strip 20 is provided that is fitted with contact wires. The bullet ribbons 20 have contact wires in the respective holding sections of the bullet ribbons 20. The holding sections are arranged adjacent to each other in the longitudinal direction of the bullet strip. It can also be said that the mould sections of adjacent contact wires are connected to the respective mould sections in the longitudinal direction of the bullet strip, each contact wire being used for producing a contact pin.

In step 720, the bullet ribbon 20 is cut at the cutting line 22 so as to obtain the remainder 6 of the bullet ribbon 20 fitted with the contact wire. Preferably there is exactly one contact wire between the free end of the bullet strip and the cutting wire 22. In other words, the residual piece 6 is equipped with exactly one contact wire 4. The cutting off may preferably take place only on one side of the contact wire 4. Alternatively, the bullet strip 20 may be cut along the longitudinal direction R2 of the bullet strip at two opposite sides of the contact wire 4. In this case too, a residual part with exactly one contact wire is obtained. In other words, as described in the manufacturing method 600, the contact pin of the present invention may be obtained in step 720. Preferably, the distance of the cutting wire 22 to the contact wire in the remainder after cutting corresponds to a calculated value for impedance adaptation.

Preferably, the cutting line 22 passes through two contact wires arranged adjacent to each other in the longitudinal direction R2 of the bullet strip.

The severing in step 720 results in the contact pin of the present invention.

In step 730, the contact pin, or in other words, the remainder of the bullet strip fitted with the contact wire, is inserted into a shield having a cross-sectional jump (cross-sectional jump). Preferably, the remainder is arranged at the level of the cross-sectional jump of the shielding in the longitudinal direction of the contact wire.

Optionally, the method 700 includes reshaping the remainder. As already explained, the remainder preferably comprises a molded section for impedance adaptation. In step 725, the molded sections of the remaining pieces may be reshaped according to the calculated values for impedance adaptation. The calculated value may be the same as a value characterizing or corresponding to a cross-sectional jump of the mask.

Furthermore, at least a part of the remaining part may be used as a guiding aid on the contact pin when the contact pin is inserted into the shield.

Further, the method 700 may include inserting a seal between the free end of the contact pin and the remainder for impedance adaptation on the contact wire.

Fig. 8 shows a top view of a bullet strip 20 fitted with contact wires 4. The contact wires 4 are fastened or arranged in the respective holding sections 12 of the bullet strip 20. In fig. 8, the respective holding sections are highlighted by hatching. Furthermore, the free end 32 of the bullet strip 20 and the cutting line 22 extending between the 2 contact wires 4 are shown on the left-hand side. In fig. 8, the cutting line 22 extends parallel to the longitudinal direction R1 of the contact wire. However, the cutting line 22 may also extend obliquely (on the bullet strip) with respect to the longitudinal direction R1 of the contact wire. The molding section 14 associated with the contact wire 4 arranged at the free end 32 extends from the cutting line 22 to the free end 32 in the longitudinal direction R2 of the bullet strip. Fig. 8 shows the distance of the cutting wire 22 to the contact wire 4 in the longitudinal direction R2 of the bullet strip. The distance 34 is shown extending between the proximal point of the contact wire and the severing wire 22. However, the distance 34 may be used with respect to the center of the contact wire 4 instead of the proximal end of the contact wire. In this case half the diameter 16 of the contact wire 4 will be considered as offset. The distance 34 may be determined by analog methods and in particular from calculated values for impedance adaptation.

Furthermore, fig. 8 shows the belt sections 52 of the bullet strip, the belt sections 52 extending along the longitudinal direction R2 of the bullet strip and having adjacent shaping sections 14 in successive rows.

Fig. 9 shows a cross-sectional view of the plug connector 36 of the present invention. The housing 38 is preferably formed as a hollow cylinder and thus has an axial direction R1, which axial direction R1 corresponds to the previous longitudinal direction R1 of the contact wire. Preferably, the shield 40 is centrally or concentrically disposed in the housing 38. The shielding 40 can also be designed as a hollow cylinder, whereby it has a cross-sectional jump in the axial direction R1. In other words, the shield 40 may be described as two axially stacked hollow cylinders provided with different cross-sectional diameters and connected via a material bridge at the cross-sectional jump 42. Preferably, the shield 40 is rotationally symmetrical with respect to the axial or longitudinal direction R1 of the contact wire. The contact pin 2 of the invention is arranged in a contact pin receptacle of a plug connector. Preferably, the contact pin 2 is received as an inner conductor in the shield 40. As mentioned above, the cross-sectional jump 42 of the shield 40 is located between the two ends of the received contact pin 2. In particular, the molding section 14 may be arranged at the height of the cross-sectional jump 42 in the longitudinal direction R1 of the contact wire.

In addition, one of the plug connectors 36 may have a fastening element 44. The fastening element 44 is preferably embodied in the form of a ring, so that the contact pin 2 can penetrate the fastening element 44. In other words, the fastening element 44 has a central opening. Further, the fastening element 44 may have an integral seal 46. In this case, the seal 46 is, for example, a seal ring. The fastening element 44 is preferably inserted coaxially into the shield 40 and at the same time accommodates the contact pin 2 in its central opening. The complementary surface of the fastening section 24 may be formed on the inner surface of the central opening of the fastening element 44 of the contact pin 2 such that the fastening element 44 holds the contact pin 2. Preferably, the fastening element 44 is arranged in a section having a smaller cross-sectional extension with respect to the axial direction R1 of the plug connector.

Furthermore, a seal may be arranged in alignment between the free end of the contact pin 2 and the holding section 12 in the longitudinal direction of the contact wire. As mentioned above, the seal 46 may be embodied in particular as a sealing ring, which additionally protects the plug connector from moisture ingress.

Fig. 10 shows a set 48 of contact pins 2a and 2b of the present invention. For simplicity, the contact pin group 48 is shown with only two contact pins 2a and 2b. However, the contact pin set 48 may comprise any number of contact pins 2 according to the invention. For the contact pin 2a, the impedance adapting element 6a is designed differently from the impedance adapting element 6b of the other contact pin 2b. In particular, the two impedance adapting elements 6a and 6b may be geometrically differently shaped. Thus, for example, for the contact pin 2 the molding section 14a is designed as a plane parallel plate, while for the contact pin 2b the molding section 14b is circular. In other words, the further molded section 14b is sleeve-shaped and its geometry differs. In particular, the two molded sections 14a and 14b differ in terms of the lateral extent transverse to the longitudinal direction R1 of the contact wires.

Fig. 11 shows a set 50 of plug connectors 36 of the present invention. For simplicity, a set 50 having only two plug connectors 36a and 36b is shown here. However, the plug connector set 50 may include any number of plug connectors 36. A cross-sectional view of plug connectors 36a and 36b is shown in fig. 11. Both plug connectors comprise contact pins 2a and 2b according to the invention. The contact pin 2a comprises an impedance adapting element 6a with a moulded section 14 a. The contact pin 2b comprises an impedance adapting element 6b with a moulded section 14 b. The contact pin 2a is inserted into the shield 40a of the plug connector 36a and the contact pin 2b is inserted into the shield 40b of the plug connector 36 b. The plug connector 36a differs from the plug connector 36b only in that its impedance adapting element 6a is geometrically formed differently from the impedance adapting element 6b of the other connector 36b in the plug connector set 50. Similar to fig. 10, for example, the molding section 14a can be designed as a plane parallel plate, while for the contact pin 2b the molding section 14b is circular. The expansion of the respective molded sections 14a and 14b is thus also different transversely to the longitudinal direction of the contact wires. Thus, different impedance adaptations can be achieved solely due to the different shapes of the remainder of the bullet strip or the impedance adapting element 6.

Reference marks

2. 2A, 2b contact pin

4 Contact wire

6. 6A, 6b impedance adapting element/remainder

8 First end

10 Second end

12 Holding section

14. 14A, 14b moulding section

Diameter of 16 circles

Rectangular parallelepiped with 18 diameters

20 Bullet strip

22 Cutting line

24 Fastening section

26 Notch

28 Projection

30 Gradual change portion

32 Free ends

34 Distance between contact wire and separation line

36. 36A, 36b plug connector

38 Shell body

40 Shield

42 Cross-sectional jump

44 Fastening element

46 Seal

48 Contact needle group

50 Plug connector set

52 Belt sections

600 Contact pin manufacturing process

610 Provides

620 Cut

630 Reshaping

Manufacturing method of 700 plug connector

710 Provides

720 Cutting

725 Reshaping

730 Insertion

Claims

1. A contact pin (2) for a connector (36), comprising:

A contact wire (4),

An impedance adapting element (6) from the remainder of the bullet strip (20),

Wherein the impedance adapting element (6) is arranged between two ends (8, 10) of the contact wire (4).

2. Contact pin (2) according to claim 1, wherein the impedance adapting element (6) from the remainder of the bullet strip (20) comprises a holding section (12) holding the contact wire (4) and a moulded section (14) connected to the holding section (12) via a material bridge for adapting the impedance.

3. The contact needle (2) of claim 2, wherein the molding section (14) comprises a remainder of a notched band section (52) of the bullet band strip (20).

4. A contact pin (2) according to any one of claims 2 to 3, wherein the mould section (14) comprises a plane parallel plate (14 a).

5. Contact pin (2) according to any one of claims 2 to 4, wherein the molded section (14) has a curved shape (14 b) in a cross-sectional plane perpendicular to the longitudinal direction (R1) of the contact wire.

6. Contact pin (2) according to claim 5, wherein the molded section (14) partly or completely encloses the contact wire (4).

7. Contact pin (2) according to claim 5 or 6, wherein a center point of the contact wire (4) in a cross-sectional plane perpendicular to a longitudinal direction (R1) of the contact wire is offset from a center point defining the curved shape of the molded section (14).

8. A plug connector (36), comprising:

contact pin (2) according to any one of claims 1 to 7,

A shield (40) receiving the contact pin (2) as an inner conductor, wherein the shield (40) has a cross-sectional jump (42) between the two ends (8, 10) of the contact pin (2) along a longitudinal direction (R1) of the shield (40),

Wherein the impedance adapting element (6) of the contact pin (2) is arranged at the level of a cross-sectional jump (42) of the shield (40) in the longitudinal direction (R1) of the contact wire.

9. Plug connector (36) according to claim 8, having a contact pin (2) according to any one of claims 2 to 7, wherein the shield (40) has a section which has a larger cross section in the longitudinal direction after the cross-section jump (42) than before the cross-section jump (42), and wherein the section of the shield (40) having the larger cross section partly or completely encloses at least the molded section (14) of the contact pin (2).

10. A method (600) for manufacturing a contact pin (2), comprising:

-providing (610) a remainder (6) of a bullet strip (20) fitted with contact wires (4), wherein the contact wires (4) are fastened in a holding section (12) of the remainder (6) of the bullet strip, and wherein the remainder (6) comprises a molded section (14) connected to the holding section (12) via a material bridge;

-cutting (620) and/or reshaping (630) the moulded section (14) according to calculated values for adapting the impedance.

11. A method (700) for manufacturing a plug connector (36), comprising:

-providing (710) a bullet strip (20) fitted with contact wires (4), wherein a respective one of the contact wires (4) is arranged in a respective holding section (12) of the bullet strip (20);

-cutting (720) the bullet strip (20) at a cutting line (22) in order to obtain a remainder (6) of the bullet strip (20) fitted with contact wires (4), wherein the cutting line (22) on the bullet strip (20) extends between two contact wires (4) arranged adjacently in the longitudinal direction (R2) of the bullet strip (20); and

-Inserting (730) the remainder (6) of the bullet strip (20) fitted with the contact wire (4) into a shield (40) having a cross-section jump (42), wherein the remainder (6) is arranged at the level of the cross-section jump (42) of the shield (40) in the longitudinal direction (R1) of the contact wire.

12. The method according to claim 11, wherein the residual piece (6) further comprises a molded section (14) for adapting the impedance, the method further comprising:

-reshaping (725) the molded section (14) of the remainder (6) according to a value corresponding to the cross-sectional jump (42) of the shield (40).

13. The method according to claim 11 or 12, wherein the remainder (6) of the bullet strip (20) fitted with the contact wire (4) is used as a guiding aid when inserting (730) the remainder (6).

14. A group (48) of contact pins according to any one of claims 1 to 7, wherein at least one impedance adapting element (6 a) of a contact pin (2 a) is geometrically shaped differently from an impedance adapting element (6 b) of another contact pin (2 b) of the group (48) of contact pins.

15. Plug connector set (50) according to claim 8 or 9, wherein the first contact pin (2 a) of a first plug connector (36 a) in the plug connector set (50) comprises an impedance adapting element (6 a), the impedance adapting element (6 a) being shaped differently from the geometry of the second contact pin (2 b) of another plug connector (36 b) in the plug connector set (50).